"There are questions about sporting integrity given the exceptionally close links between some bidders and the owners of other European clubs including PSG and Nice," said MUST, which is one of the largest supporters' groups in the world with over 200,000 members.
"There are also questions about whether any bids will also be based on high levels of debt.
"We also note the importance that any owner respects the rights of all people, particularly women and the LGBTQ+ community. Concerns have been raised by other fans groups which we fully support."